Terminal construction for central lubricating installations



June 14 1927 E. J. BLOOM I TERMINAL CONSTRUCTION FOR CENTRAL LUBRICATINGINSTALLATIONS Original Filed May 19. 1922 awn ento'c' fifiwm 33%;; Mabbot/b40430 Patented June 14, 1927.v

, y 1,632,724 UNITED STATES PATEN-T OFFICE.

EDGAR J. BIlOOM, 0F 'IIFFIN, OHIO, ASSIGITOR, BY MESNE ASlSIGNMENTS, TOAUTO RESEARCH CORPORATION, A CORPORATION OF DELAWARE.

'rnnmnur. CONSTRUCTION Fon cnmrm LUBRICATING INSTALLATIONS.

Original application filed May 19, 1922, Serial No. 562,090. Divided andthis application filed August a, 1926. Serial No. 127,493.

My present invention relates to fluid dis-' tributing terminals oroutlets, and in its preferred application to the lubricator term1- nalsthrough which the bearings are s up-' 5 plied from a central lubricatinglnstallanon.

ple fittings of uniform construction, the

rating of which is determined wholly by in- 2 terchangeable ratingplugsor fillers within I a t'ruding'part for application thereto of the thefittings.

Thisapplication is a division of my copending application, Serial No.562,090, filed May 19th, 1922. I

In the accompanying drawings 1n which is shown one of various possibleembodlments of the several features of the inven tion Fig. 1 is adiagrammatic view of an automobilechassis, equi ped with a centrallubricating system em odying my termmals,

Fig. 2 isan end elevation of one of the terminal fittings,and; I

Fig. 3 is a sectional view thereof on line 3-3 of Fig.2.

-The drawings show an installation comprising a tank a delivering to apump, the op'eratin handle a of which is accessible fromthe riversseat.Thepipinginstallation comprises a transverse main. n sup lied from thepum and feeding at its ends'mto mains 1' and 0, flbn itudinally of thechannel frames. The forwar ends of said mains lead to the correspondingspring bolt bearings through lubricator terminals 't of the constructionshown in Figs. 2 and 3 and hereinafter described.v Similar lubricatorterminals t are applied at the front bolts of the rear spring andconnected to the corresponding mains through branch pipes b. The springshackles y are preferably supplied through the con-- structions shownand claimed in my copending application, Serial -No. 562,060, filed May,19th, 1922. Other lubricator terminals lubricating construction need notbe further described as it is the subject-matter of a copendingapplication, Serial No. 127 ,494, filed concurrently herewith. Anynumber of additional bearings (notshown) may be supplied through furtherterminals,'similar to those shown in Figs. 2 and 3.

, Each of the lubricator terminals, one of which isshown separately inFigs. 2 and 3, comprises a unitary fitting having a filler or plugcarried therein, determining the impedance to flow" of lubricanttherethrough, said fittting intended to be plugged at its outlet intothe bearing to be supplied there- A from and having a conformation atits proextremlty of the corresponding supply pipe.

In a desirable specific construction shown, the terminal lubricatorcomprises a tubular fitting 10, illustratively of elbow form having alongitudinal bore 11 therethrough of diameter small compared to itslength. Within the tube is carried a flow obstruction resistance orimpedance, comprising a slug preferably a rigid or metal plug 12,etermmlng a minute obstructing or metermg passa c. This plug in theembodiment shown is xed as by threading at 13 into the bore of thefitting and has aminute axial hole 14 therein through which thelubricant passes. The plug is provided with a fillister slot '15 at itsouter end by which it may readily be applied with the use of a screwdriver. I

The outlet end of the fitting may be exteriorly threaded at 16 forapplication direct- 1K into'a correspondingly tapped hole 17 in t efixed bearing mem er, diagrammaticall indicated in dotted lines. At theinlet en the fitting is provided with a coupling conformationfor'attachment thereto of the corresponding extremity of the pipesystem. As shown, the bore at the inlet end of the fitting is enlargedand tapped at 18 and affords a stop shoulder 19 for the extremity of thepipe 20 and the metal of the fitting is.

formed with" a curved or wedging shou 21 adjacent said stop. Acompression coupling nut 22 encircles the extremity of the pipe, isthreadedinto the socket and has a reduced inner end 23 wedged inward bythe shoulder 21 in the fitting as the coupling nut 22 is tightened andthereby constricting the pipe as at 2-1 thereat to efi'ect a securelubricant-tight joint.

My construction of lubricant terminal lends itself readily for use incentral chassis lubricating installations. The pre-assembled fittings 10with their enclosed plugs 12 are merely screwed into the variousbearings on the vehicle, and the corresponding pipe extremities aresuccessively connected, each by passing its coupling nut 22 thereover,inserting the pipe extremity into the fitting, as far as it will go andthen tightening the coupling nut.

In use, each of the minute outlet apertures 14 at the variouslubricator-s determines the rate of lubricant exit following a pressureapplication at the pump a, so that the distribution of lubricant isaccurately controlled. The lubricant is thus passed directly into eachbearing through a dust-tight non-leaking enclosed passageway. The lossof lubricant and entry of dirt and water incurred by dripping through anopen air gap is thus wholly obviated.

My terminal lubricator is a compact, small volume fitting part, notessentially a storage or supply reservoir or cup of substantial volume.It measures or meters rate alone, and not quantity of flow as would anordinary oil or grease cup.

With the use of a common fitting 10, lubricator terminals of diil'erentratings may be assembled by merely providing metering plugs 12 withapertures 14 of difierent diameters or ratings which may beinterchangeably mounted in the fitting depending on the rate desired.

I claims- 1. A lubricator terminal comprising a unitary pipe fittinghaving a longitudinal bore therethrough, one end of said fitting beingexternally threaded for application into a bearing, the other end beingconformed "for application of a pipe end in fluid-tight relation withrespect thereto, and

a rigid flow obstructing filler member disposed within Said fitting anddetermining a minute passage therethrough, whereby with the use of apipe fitting of uniform construction, a terminal of desired selectedmetered fiow'rate may be provided by the use of a filler ofcorresponding rating, determining substantially the exact size of theminute passage desired and means constituting part of the assembleduninstalled terminal for retainin" said filler in said fitting.

2. A set of lubricator terminals of various fixed ratings, comprisingsimilar pipe fittings, each of said fittings having a longitudinal boretherein, one end of said fitting being externally threaded forapplication into a bearing, the other end being conformed forapplication of a pipe end in fluidtight relation with respect thereto,and rigid filler members obstructing said fittings, each determining aminute invariant open passage, the magnitude of which governs the ratingof the fitting, said filler members being interchangeably insertable insaid similar pipe fittings, said fillers being entirely enclosed in saidfittings when the latter are installed, the rating of each terminalbeing determined by the rating of the filler member inserted therein.

Si ned at Tifiin, in the county of Seneca and tate of Ohio, this 31stday of July, A.

EDGAR J. BLOOM.

